Temat: indicated parameters - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of the indicator diagrams smoothing on the indicated parameters of marine diesel engines
Autorzy:: Pawletko, R.
Powiązania:: https://bibliotekanauki.pl/articles/244800.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: indicator diagrams
smoothing the interference
engine indicated parameters
Opis:: The topic of this article is to analyze the influence of indicator diagrams smoothing methods on diagnostic parameters determined on their basis such as the maximum combustion pressure, mean indication pressure and heat release characteristics. Indicator diagrams of marine engines are subject to serious distortions arising primarily from the measuring method for in-cylinder pressure. Measurements are performed on the indicator valve which connect with the combustion chamber through the indicator channel. Depending on the engine design the channel length can reach a considerable length and introduces significant distortion in both the phase and amplitude of the pressure signal. Further analysis of the indicator diagram eg. in order to determine the heat release characteristics requires the use of methods of smoothing and filtering of interference. The results confirm no effect of indicator diagram smoothing for the value of the mean indicated pressure, which is one for the most important indicated parameters. A significant influence of smoothing on the maximum value of the heat release rate was observed. The differences in this case exceed 50%. At the same time confirmed that the heat release rate curve determined on the basis of a diagram without smoothing, carry a high level of interference, which precludes their practical use. Smoothing allows getting heat release rate curves that carry vital information about the working process of the engine.
Źródło:: Journal of KONES; 2015, 22, 2; 169-176
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The problematics of determining the characteristics of heat release, based on experimental indicator diagram for diagnostic purposes
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246500.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
indicated parameters
indicator diagram
heat release characteristics
adiabatic exponent
Opis:: The article discusses the problem of determining the characteristics of heat release based on experimental indicator diagram for diagnostic purposes. The importance of the operational diagnosis of marine engines is the analysis of indicator diagrams was identified. In addition to analysing changes in the values of indicated, should be aimed to oriented broader analysis, including the determination on the basis of experimental indicator diagram of heat release characteristics during the combustion process. Then it is essential to choose the right model of heat release for reciprocating piston engines with direct fuel injection. In the diagnostics of piston engines, including marine engines, special interest arouses use single-zone model based on indicator diagrams as a source of information. Based on the results their own research we analysed the impact on the characteristics of heat release of simplifying assumptions in the model of heat release, including constant value adiabatic exponent. In the temperature, range 300÷2800 K waveformsκ are considered to be linearly dependent on the temperature. Based on the above, for the gas temperature from 800 K to 1850 K value of the exponent κ decreases about 3%. The effect of the value κ on the course of characteristics q and Q, to the typical marine engines was shown.
Źródło:: Journal of KONES; 2016, 23, 1; 429-436
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The issue of the indicator diagram analysis for the purpose of diagnosis of marine diesel engines
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246999.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
indicated parameters
indicator diagram
error TDC
heat release characteristics
Opis:: The article analyses the possibility of using the electronic type indicators, in the diagnosis of marine engines. The analysis of indicated parameters read from the indicator diagram is now widely use on ships in the diagnosis of marine engines. To make this possible, measuring indicated systems should meet a number of important requirements to be met to ensure the possibility of their diagnostic use. These include reliable determination of the top dead centre piston (TDC). The above is particularly important in in-depth analysis of indicator diagrams − calculating the heat release characteristics. The paper presents results of research on the effect of the error on the accuracy of the location of TDC (GMP) on calculated heat release characteristics. In order to demonstrate the impact positional error TDC, simulation study was conducted in which indicated diagrams was used, obtained on a medium-speed four-stroke marine engine type A25/30 and the low-speed two-stroke engine type RTA76, Sulzer Company.
Źródło:: Journal of KONES; 2015, 22, 2; 293-298
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Miller cycle application to the gaseous supercharged SI engine
Zastosowanie obiegu Millera do doładowanego silnika gazowego o zapłonie iskrowym
Autorzy:: Grab-Rogaliński, K.,
Szwaja, S.
Powiązania:: https://bibliotekanauki.pl/articles/133773.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: gas engine
indicated parameters
Miller cycle
silnik gazowy
parametry indykowane
obieg Millera
Opis:: The paper contains results of tests on the spark ignited (SI) engine modified to work as the engine with the overexpanded thermodynamic Miller cycle. Investigation was particularly focused on thermodynamic properties of the applied Miller cycle as well as combustion progress in the supercharged engine fuelled with various gaseous fuels as follows: coke gas, natural gas and hydrogen. Crucial conclusions deal with experimental investigation. The conclusions showed the following: IMEP was maintained at the same level with aid of supercharging, thermal indicated efficiency increased.
W artykule przedstawione zostały wyniki stanowiskowych silnika o zapłonie iskrowym przystosowanym do pracy na zasadzie obiegu Millera. Badania skupiały się na właściwościach termodynamicznych wykorzystanego obiegu Millera jak również przebiegu spalania w doładowanym silniku zasilanym różnymi paliwami gazowym takimi jak: gaz koksowniczy, gaz ziemny, wodór. Główne wnioski uzyskane zostały w wyniku badań eksperymentalnych i wskazały wzrost odporności na spalanie stukowe przy wykorzystaniu obiegu Millera oraz podwyższenie sprawności indykowanej.
Źródło:: Combustion Engines; 2015, 54, 3; 881-885
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Possibility of obtaining diagnostic information about the ships engine fuel injection system condition based on the analysis of characteristics of heat release
Autorzy:: Witkowski, Kazimierz
Powiązania:: https://bibliotekanauki.pl/articles/248068.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
indicated parameters
indicator diagram
heat release characteristics
injection system
diagnostic
Opis:: Marine engines are very complex technical objects, having many important functional systems, which include, inter alia, injection system, characterized by high unreliability. In this system, there may be different types of defects (damage) that affect the engine parameters, including specific fuel consumption, as well as failures endanger the safety of the ship. The indicator diagrams and analysis of indicated parameters have limited utility in the diagnosis of damages of marine engine, although this is a method commonly used in operational practice. To achieve greater diagnostic effectiveness, when, based on indicator diagrams, are calculated and then the characteristics of heat release is analysed - net of heat release characteristics and the intensity of the heat release, it was demonstrated. This procedure is particularly effective in the diagnosis of damages of marine diesel engine injection system components. It has been shown that the characteristics of heat release contain information about the condition of the injection systems, which enable to diagnose their failures. This is shown on the example of a clogged nozzle holes (their carbonizations). The obtained results allowed selecting the diagnosis symptoms, useful in detecting these faults in the injection system, from the characteristics of heat release: net heat release (Q) and intensity of heat release (q). The object of the research was typical marine medium speed engine Sulzer A25/30.
Źródło:: Journal of KONES; 2019, 26, 3; 249-256
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Wskaźniki indykowane silnika Perkins 1104d-e44ta zasilanego dwupaliwowo olejem napędowym i gazem ziemnym
Indicated indicators Perkins 1104d-E44ta engine duel fuel oil and natural gas supply
Autorzy:: Łagowski, P.
Kurczyński, D.
Warianek, M.
Dąbrowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/314604.pdf
Data publikacji:: 2018
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: silnik o zapłonie samoczynnym
silnik Perkins 1104D-E44TA
parametry pracy silnika
zasilanie dwupaliwowe
indykowane wskaźniki
compression ignition engine
Perkins 1104D-E44TA engine
engine performance parameters
dual-fuelled engine
indicated parameters
Opis:: Celem artykułu jest analiza i ocena wpływu zasilania dwupaliwowego olejem napędowym i gazem ziemnym na wskaźniki indykowane silnika o zapłonie samoczynnym Perkins 1104D-E44TA. Analizie poddano rzeczywiste wykresy indykatorowe sporządzone przy pracy silnika wg zewnętrznej charakterystyki prędkościowej w zakresie prędkości obrotowej wału korbowego silnika od 1000 do 2400 obr/min. Na podstawie uśrednionych przebiegów ciśnienia w cylindrze sporządzano otwarte wykresy indykatorowe, które następnie poddawano analizie. Wyznaczano wskaźniki pracy badanego silnika jak: średnie ciśnienie indykowane pi, średnie ciśnienie efektywne pe, moc indykowaną Ni, moment indykowany Mi, sprawność indykowaną ηi, sprawność mechaniczną ηm, oraz jednostkowe indykowane zużycie paliwa gi.
The aim of the article is to analyze and evaluate the effect of dual-fuel feed on diesel and natural gas on Indicated Engine Ignition Indicators Perkins 1104D-E44TA. The actual indicator diagrams prepared during engine operation according to the external speed characteristic in the engine crankshaft speed range from 1000 to 2400 rpm were analyzed. On the basis of the average pressure courses in the cylinder, open indicator diagrams were made, which were then analyzed. The operating parameters of the tested motor were determined as: average indicated pressure pi, average effective pressure pe, indicated power Ni, indicated torque Mi, indicated efficiency ηi, mechanical efficiency ηm, and unit-specific fuel consumption gi.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 562-567, CD
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Comparison of operational parameters and stability of performance of an automotive SI engine powered by methyl and ethyl alcohols
Autorzy:: Pietras, Dariusz
Stelmasiak, Zdzislaw
Pietras, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/24202477.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: methyl alcohol
ethyl alcohol
operational parameters
overall efficiency
indicated pressure
smoothness of engine operation
alkohol metylowy
alkohol etylowy
parametry użytkowe
sprawność ogólna
ciśnienie indykowane
równomierność pracy silnika
Opis:: The article presents research results performed using automotive spark ignition engine run on methyl and ethyl alcohols as well as gasoline as a reference fuel. The research was performed on automotive engine of Fiat 1100 MPI type. The aim of the conducted analysis was to compare the operational parameters of the engine. These parameters included engine power output, overall efficiency, emissions of toxic components in exhaust gases, and a comparison of the combustion process course. This comparison was conducted based on recorded and averaged indicator diagrams, as well as individual combustion cycles. The averaged diagrams were used in analysis of the pressure course during combustion, in analysis of pressure growth rate and heat release rate. Diagrams of individual combustion served for assessment of operational smoothness of the engine when fuelled with alcohols. As the reference, parameters measured in case of gasoline fuelling were used.
Źródło:: Combustion Engines; 2023, 62, 3; 129--140
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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